Acoustic source location in a three-dimensional space using crosspower spectrum phase
- 22 November 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 1 (15206149) , 231-234
- https://doi.org/10.1109/icassp.1997.599611
Abstract
A microphone array can be used to locate a dominant acoustic source in a given environment. This capability is successfully employed to locate an active talker in teleconferencing or other multi-speaker applications. In this work the source location is obtained in two steps: (1) a time difference of arrival (TDOA) computation between the signals of the array; (2) an "optimal" source location based on the interchannel delay estimates and on a geometrical description of the sensor arrangement. The crosspower spectrum phase technique was used for TDOA estimation, while a maximum likelihood approach was followed to derive the source coordinates. Source location experiments in a three-dimensional space were performed by means of an array of 8 microphones. For this purpose both a loudspeaker and a real talker were used to collect data in a large noisy and reverberant room.Keywords
This publication has 7 references indexed in Scilit:
- Acoustic source location in noisy and reverberant environment using CSP analysisPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Acoustic event localization using a crosspower-spectrum phase based techniquePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Use of the crosspower-spectrum phase in acoustic event locationIEEE Transactions on Speech and Audio Processing, 1997
- A DSP implementation of source location using microphone arrays.The Journal of the Acoustical Society of America, 1996
- A simple and efficient estimator for hyperbolic locationIEEE Transactions on Signal Processing, 1994
- Statistical Theory of Passive Location SystemsIEEE Transactions on Aerospace and Electronic Systems, 1984
- The generalized correlation method for estimation of time delayIEEE Transactions on Acoustics, Speech, and Signal Processing, 1976